Searched hist:16550 (Results 1 - 19 of 19) sorted by relevance
| /freebsd-11-stable/sys/mips/atheros/ | ||
| H A D | uart_bus_ar933x.c | diff 253509 Sun Jul 21 02:10:30 MDT 2013 adrian Use the UART frequency when programming the UART clock. This allows the 16550 support to work correctly on the upcoming AR934x support. 248843 Thu Mar 28 17:38:17 MDT 2013 adrian Bring over the initial, CPU-only UART support for the AR933x SoC. This implements the kernel glue needed (getc, putc, rxready). This isn't a 16550 UART, even if the datasheet overview claims so. The Linux ar933x support was used as a reference, however the uart code is a reimplementation. Attentive viewers will note that the uart code is based off of the ns8250 code and the UART bus code is a stubbed-out version of this. I'll be replacing it with non-stubbed versions soon, making this a fully featured driver. Tested: * AP121 reference board (AR933x), booting through the mountroot> prompt; then doing some basic interactive tests in ddb. |
| H A D | uart_bus_ar71xx.c | diff 253509 Sun Jul 21 02:10:30 MDT 2013 adrian Use the UART frequency when programming the UART clock. This allows the 16550 support to work correctly on the upcoming AR934x support. |
| /freebsd-11-stable/usr.sbin/bhyve/ | ||
| H A D | pci_uart.c | 234938 Thu May 03 01:24:50 MDT 2012 grehan Add 16550 uart emulation as a PCI device. This allows it to be activated as part of the slot config options. The syntax is: -s <slotnum>,uart[,stdio] The stdio parameter instructs the code to perform i/o using stdin/stdout. It can only be used for one instance. To allow legacy i/o ports/irqs to be used, a new variant of the slot command, -S, is introduced. When used to specify a slot, the device will use legacy resources if it supports them; otherwise it will be treated the same as the '-s' option. Specifying the -S option with the uart will first use the 0x3f8/irq 4 config, and the second -S will use 0x2F8/irq 3. Interrupt delivery is awaiting the arrival of the i/o apic code, but this works fine in uart(4)'s polled mode. This code was written by Cynthia Lu @ MIT while an intern at NetApp, with further work from neel@ and grehan@. Obtained from: NetApp |
| H A D | pci_emul.c | diff 234938 Thu May 03 01:24:50 MDT 2012 grehan Add 16550 uart emulation as a PCI device. This allows it to be activated as part of the slot config options. The syntax is: -s <slotnum>,uart[,stdio] The stdio parameter instructs the code to perform i/o using stdin/stdout. It can only be used for one instance. To allow legacy i/o ports/irqs to be used, a new variant of the slot command, -S, is introduced. When used to specify a slot, the device will use legacy resources if it supports them; otherwise it will be treated the same as the '-s' option. Specifying the -S option with the uart will first use the 0x3f8/irq 4 config, and the second -S will use 0x2F8/irq 3. Interrupt delivery is awaiting the arrival of the i/o apic code, but this works fine in uart(4)'s polled mode. This code was written by Cynthia Lu @ MIT while an intern at NetApp, with further work from neel@ and grehan@. Obtained from: NetApp |
| H A D | bhyverun.c | diff 234938 Thu May 03 01:24:50 MDT 2012 grehan Add 16550 uart emulation as a PCI device. This allows it to be activated as part of the slot config options. The syntax is: -s <slotnum>,uart[,stdio] The stdio parameter instructs the code to perform i/o using stdin/stdout. It can only be used for one instance. To allow legacy i/o ports/irqs to be used, a new variant of the slot command, -S, is introduced. When used to specify a slot, the device will use legacy resources if it supports them; otherwise it will be treated the same as the '-s' option. Specifying the -S option with the uart will first use the 0x3f8/irq 4 config, and the second -S will use 0x2F8/irq 3. Interrupt delivery is awaiting the arrival of the i/o apic code, but this works fine in uart(4)'s polled mode. This code was written by Cynthia Lu @ MIT while an intern at NetApp, with further work from neel@ and grehan@. Obtained from: NetApp |
| /freebsd-11-stable/stand/pc98/boot2/ | ||
| H A D | boot2.c | diff 268475 Thu Jul 10 00:32:17 MDT 2014 imp Make SERIAL support optional again. Enable it for i386 because a huge percentage of machines has a 16550. Disable it for pc98 since only a tiny fraction of them have one. These changes save 293 bytes when building with clang, but preserves the ability to build with serial if you really want. We now have 92 bytes free (412 with the in-tree gcc). |
| /freebsd-11-stable/sys/dev/uart/ | ||
| H A D | uart_dev_ns8250.c | diff 291010 Wed Nov 18 04:35:55 MST 2015 adrian uart(4) - make the 8250 uart baudrate tolerance build time tweakable. It turns out on a 16550 w/ a 25MHz SoC reference clock you get a little over 3% error at 115200 baud, which causes this to fail. Just .. cope. Things cope these days. Default to 30 (3.0%) as before, but allow UART_DEV_TOLERANCE_PCT to be set at build time to change that. diff 177117 Wed Mar 12 17:09:20 MDT 2008 sam add device hints to control the rx FIFO interrupt level on 16550A parts PR: kern/121421 Submitted by: UEMURA Tetsuya Reviewed by: marcel MFC after: 2 weeks diff 120022 Sat Sep 13 04:25:04 MDT 2003 marcel Add support for automatic hardware flow control for 16[679]50 UARTs. We simply use the detected FIFO size to determine whether we have a post 16550 UART or not. The support lacks proper serialization of hardware access for now. |
| H A D | uart_bus_fdt.c | diff 254589 Wed Aug 21 02:06:21 MDT 2013 ian Check for generic ns16550 after all other types. A device may be compatible with 16550 but also have a more specific/capable driver earlier in the list. |
| H A D | uart.h | diff 177117 Wed Mar 12 17:09:20 MDT 2008 sam add device hints to control the rx FIFO interrupt level on 16550A parts PR: kern/121421 Submitted by: UEMURA Tetsuya Reviewed by: marcel MFC after: 2 weeks |
| /freebsd-11-stable/sys/dev/sio/ | ||
| H A D | sio.c | diff 120173 Wed Sep 17 14:44:02 MDT 2003 bde Fixed bitrot in the probe in revs.1.127, 1.165 and 1.169. The COM_NOFIFO() and COM_ESP cases are supposed to be a subsets of the plain 16550A case, but 16650-related changes made the former fall into the latter and then both fall into general code for printing the tx fifo size. This mainly caused hard to parse boot messages like: "sio0: type 16550A fifo disabled lookalike with 1 bytes FIFO". COM_NOFIFO() on an ESP port gave a larger mess whose extent is not clear. Fixed some nearby style bugs. diff 120173 Wed Sep 17 14:44:02 MDT 2003 bde Fixed bitrot in the probe in revs.1.127, 1.165 and 1.169. The COM_NOFIFO() and COM_ESP cases are supposed to be a subsets of the plain 16550A case, but 16650-related changes made the former fall into the latter and then both fall into general code for printing the tx fifo size. This mainly caused hard to parse boot messages like: "sio0: type 16550A fifo disabled lookalike with 1 bytes FIFO". COM_NOFIFO() on an ESP port gave a larger mess whose extent is not clear. Fixed some nearby style bugs. diff 112154 Wed Mar 12 15:20:24 MST 2003 sobomax Add initial support for IC Book Labs Dreadnought x16 Pro 16-ports card. Since this card is based on 16750 UART, modify sio(4) a bit to ignore 16750-specific 7th bit of MCR when probing card. This allows card to be detected and attached as 16550A-compatible device. More work needs to be done in order to enable nice 16750-specific features such as larger fifo buffer and higher speeds. Sponsored by: IC Book Labs MFC after: 2 weeks diff 83546 Sun Sep 16 09:14:56 MDT 2001 murray Recognize two cheap PCI 16550 devices : CyberSerial (1-port) 16550 Oxford Semiconductor Dual Port 16550 Sort the list of PCI devices while I'm here. diff 83546 Sun Sep 16 09:14:56 MDT 2001 murray Recognize two cheap PCI 16550 devices : CyberSerial (1-port) 16550 Oxford Semiconductor Dual Port 16550 Sort the list of PCI devices while I'm here. diff 83546 Sun Sep 16 09:14:56 MDT 2001 murray Recognize two cheap PCI 16550 devices : CyberSerial (1-port) 16550 Oxford Semiconductor Dual Port 16550 Sort the list of PCI devices while I'm here. |
| /freebsd-11-stable/sys/mips/conf/ | ||
| H A D | XLR | diff 198985 Fri Nov 06 11:05:08 MST 2009 rrs Ok With this commit we actually get through the mi_startup (or to the last of it).. and hit a panic after : uart0: <16550 or compatible> on iodi0 Trap cause = 2 (TLB miss....) I did have to take the pci bus OUT of the build to get this far, hit a cache error with the PCI code in. Interesting thing is the machine reboots too ;-) |
| /freebsd-11-stable/sys/dev/sound/pci/ | ||
| H A D | csa.c | diff 62947 Tue Jul 11 09:49:33 MDT 2000 tanimura Finally merge newmidi. (I had been busy for my own research activity until the last weekend) Supported devices: SB Midi Port (sbc + midi) SB OPL3 (sbc + midi) 16550 UART (midi, needs a trick in your hint) CS461x Midi Port (csa + midi) OSS-compatible sequencer (seq) Supported playing software: playmidi (We definitely need more) Notes: /dev/midistat now reports installed midi drivers. /dev/sndstat reports only pcm drivers. We need the new name(pcmstat?). EMU8000(SB AWE) does not sound yet but does get probed so that the OPL3 synth on an AWE card works. TODO: MSS/PCI bridge drivers Midi-tty interface to support general serial devices Modules |
| /freebsd-11-stable/stand/i386/boot2/ | ||
| H A D | boot2.c | diff 268475 Thu Jul 10 00:32:17 MDT 2014 imp Make SERIAL support optional again. Enable it for i386 because a huge percentage of machines has a 16550. Disable it for pc98 since only a tiny fraction of them have one. These changes save 293 bytes when building with clang, but preserves the ability to build with serial if you really want. We now have 92 bytes free (412 with the in-tree gcc). |
| /freebsd-11-stable/sys/dev/pci/ | ||
| H A D | pcireg.h | diff 52063 Sat Oct 09 14:00:56 MDT 1999 peter Add the 16550 programming interface code for PCIS_SIMPLECOMM_UART. |
| /freebsd-11-stable/sys/dev/sound/pcm/ | ||
| H A D | mixer.c | diff 62947 Tue Jul 11 09:49:33 MDT 2000 tanimura Finally merge newmidi. (I had been busy for my own research activity until the last weekend) Supported devices: SB Midi Port (sbc + midi) SB OPL3 (sbc + midi) 16550 UART (midi, needs a trick in your hint) CS461x Midi Port (csa + midi) OSS-compatible sequencer (seq) Supported playing software: playmidi (We definitely need more) Notes: /dev/midistat now reports installed midi drivers. /dev/sndstat reports only pcm drivers. We need the new name(pcmstat?). EMU8000(SB AWE) does not sound yet but does get probed so that the OPL3 synth on an AWE card works. TODO: MSS/PCI bridge drivers Midi-tty interface to support general serial devices Modules |
| /freebsd-11-stable/sys/kern/ | ||
| H A D | tty.c | diff 7851 Sat Apr 15 19:04:58 MDT 1995 bde Speed up ttnread() in the !(ICANON | ISIG) case by copying to user space through a temporary buffer instead of one character at a time. The old method takes about 6 usec/char on a 486DX2/66. This is larger than than the combined interrupt and PIO overhead for a 16550! This change was first implemented in 1.1.5. It was rewritten for 2.1. The clist access functions allow a simpler implementation at some cost in correctness and speed. There needs to be an ungetc() function to recover from EFAULT, and it wastes time to copy through a temporary buffer. Don't snoop on single characters that weren't read due to EFAULT. Rewrite a snoop comment in my approximation to English. Undo bogus exportation of ttnread(). |
| /freebsd-11-stable/sys/i386/conf/ | ||
| H A D | NOTES | diff 62947 Tue Jul 11 09:49:33 MDT 2000 tanimura Finally merge newmidi. (I had been busy for my own research activity until the last weekend) Supported devices: SB Midi Port (sbc + midi) SB OPL3 (sbc + midi) 16550 UART (midi, needs a trick in your hint) CS461x Midi Port (csa + midi) OSS-compatible sequencer (seq) Supported playing software: playmidi (We definitely need more) Notes: /dev/midistat now reports installed midi drivers. /dev/sndstat reports only pcm drivers. We need the new name(pcmstat?). EMU8000(SB AWE) does not sound yet but does get probed so that the OPL3 synth on an AWE card works. TODO: MSS/PCI bridge drivers Midi-tty interface to support general serial devices Modules |
| /freebsd-11-stable/sys/conf/ | ||
| H A D | options | diff 291010 Wed Nov 18 04:35:55 MST 2015 adrian uart(4) - make the 8250 uart baudrate tolerance build time tweakable. It turns out on a 16550 w/ a 25MHz SoC reference clock you get a little over 3% error at 115200 baud, which causes this to fail. Just .. cope. Things cope these days. Default to 30 (3.0%) as before, but allow UART_DEV_TOLERANCE_PCT to be set at build time to change that. |
| H A D | NOTES | diff 62947 Tue Jul 11 09:49:33 MDT 2000 tanimura Finally merge newmidi. (I had been busy for my own research activity until the last weekend) Supported devices: SB Midi Port (sbc + midi) SB OPL3 (sbc + midi) 16550 UART (midi, needs a trick in your hint) CS461x Midi Port (csa + midi) OSS-compatible sequencer (seq) Supported playing software: playmidi (We definitely need more) Notes: /dev/midistat now reports installed midi drivers. /dev/sndstat reports only pcm drivers. We need the new name(pcmstat?). EMU8000(SB AWE) does not sound yet but does get probed so that the OPL3 synth on an AWE card works. TODO: MSS/PCI bridge drivers Midi-tty interface to support general serial devices Modules |
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